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J. C. VAN RIPER, 112., AND S. A. PRITSCHAU.

COMBIVNATIGN COAL AND GAS RANGE. APPLICATION FILED JUNE 8. 1918.

1,307,713, -Patented1une24,1919.

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J. C. VAN RIPER, 1m, AND S. A. PRITSCIIAU.

COMBINATION COAL AND GAS RANGE.

APPLICATION FILED JUNE 8. I918.

1,307,7 1 3 Patented June 24, 1919.

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UNITED sTATEs PATENT OFFICE.

ASSIGNORS TO BANNER GAS RANGE W0 BATION OF INDIANA.

JOHN c. vAN RIPER, an, AND SIEGFRIED A. PRI'ISGHAU, or soUTrrBENn, INDIANA,

RKS, or SOUTH BEND, INDIANA, A CORPO- CoMEINATION COAL AND GAS RANGE.

Specification of Letters Patent. Patntd 11 24, 1919,

Application filed June 8, 1918. Serial No. 239,030.

To all whom it may concern:

Be it known that we, JOHN G. VAN RIPER,

Jr., and SIEGFRIED A. PRITSCHAU, citizens of the United States, residing at South Bend,

in the county of St. J osephand State ofIn diana, have invented certain new and useful Improvements in Combination Coal and Gas Ranges, of which the following is a SPECIEF cation. p

This invention relates to an improvement in stoves, and particularly to a stove designed for the use of both solid fuel.

The invention is more particularly die rected to the oven structure of such stove,, and to the arrangement and control or they heat products fro-m the respective fuels, so

that without adjustment or change of struc ture, either or both fuels may be used asa heating medium, withoutinterference and with any desired effect. A i

The feature of primary importance in the present invention is the arrangement of the oven walls, so that there is practically produced an oven within an oven, theproducts of combustion from the solid fuel being directed aboutthe outer oven wall, and the heat from the gaseous fuel being directed between the oven walls; The heat radiated from the products ofcombustion of the solid fuel is thus radiated into the same space and follows the course of the gaseous fuel heat,

so that throughout this heating zone, the

solid fuel heat may directly augment the gaseous fuel heat, or either be used inde pendently of the other, withthe same heatheating medium is concerned. i V

The circulatory pathof the gaseous fuel heat is entirely cut off from the path of the products of combustion of the solidfuel, to entirely avoid interference,and permit the ing effect, so far asthe circulation ofthe p of the-stove. The oven proper, however,

is 111 effect, arranged within this space, and

heating to be by either fuel alone if desired.

A practical and preferred form of the invention is illustratedin the accompanying drawings, in which a Figure 1 is a vertical sectional view of a stove constructed in accordance with the present invention. i

Fig. 2 is a vertical section, taken on the line 2-2 of Fig. 1. i i

Fig. 3 is a horizontal section, taken on the line 33 of Fig. 1. r

and gaseous Fig. 4 is a horizontal section taken 011 the line 4.-4: of Fig. 1.

The invention is here shown as applied to a conventional type of stove, and it is to be understood that aside from the details hereinafter described, the various parts of the stove structure may be constructed or arrangedin any preferred manner.

In the drawings, 1 represents the stove casing,having near one side or end as the case maybe, a vertical partition 2, extending fromthe bottom of the stove casingto near the top thereof. One sideof the partition forms the fire chamber for the solid fuel, beiiigprovided near the upper end with the usual fire-pot 3, with the usual doors and draft openings. The partition 2 extendsfronrone end wall to the,other of the casing, as shown in Fig. 3, and a similar partition lis arranged adjacent the oppo site side wall, and also extends from one end wall to the other. The partition 4 terminates above the bottom 5 of the casing, and slightly below the upper limit of the partition 2, the said partitions 2 and 4 constitut- [mg the oven space between them. The top wall of the oven space is in the form of a plate 6, extending from the upper edge of the partition 4 to the partition 2, and the bottom wall of such oven space is in the form of a plate 7, extending from the lower edge of thepartition 4 to the partition 2.

The main oven space is thus included betweenthepartitions2 and a and upperand lower-plates Sand 7,the latter being preferably upwardly inclined, from a central portion 8, whichis parallel to the bottom is provided by. an oven bottom in the form of a plate 9, which extends from one end adapted to beclosed by the usual door 10.

The side Walls ofthe oven proper are formed byupstanding plates or walls 11 and 12 rising from the side edges of the plate or oven bottom 9, which as shown does not extend to the partitions 2 and 4. The side walls 11 and 12 of the oven do not extend to the top plate 6 of the oven space, which gplate 6 is also the top of theoven, and the space beneath the oven bottom 9 is thus 7 door 10, is in the form of a vertical plate freely open to the interior of the oven through the spaces between the respective walls 11 and 12 and the partitions 2 and 4, as Will be plain from Fig. 1. Y

A gas or other similar fuel burner 13 is arranged in the space between the oven bottom 9 and the bottom plate 7 of the oven space. This burner, here shown as of elongated U-form, may be of any desired type, and is fed from a supply pipe 1 1, leading through one side wall of the stove and controlled by the usual valve 15. The burner preferably extends longitudinally of the stove,- and a sleeve 16 is arranged in the plate 7 and bottom 5 of the casing to provide an air inlet, which is closed against the space between said plate and bottom. A deflector 17, is arranged between the gas burner and the bottom 9 of the oven to avoid the vdirectheat thereon-and insure a more even distribution of such heat, and suc lrdeflector, as well as the oven bottom 9 isformed with an opening 18, having a swing cover 19, through which the burner 13 may be conveniently ignited.

Theescape flue 20 is arranged against the stove casing wall opposite the oven door 10, such flue extending approximately to the bottom of the casing, and there communicating with the space between the plate 7 and the casing bottom 5, through an opening21. This communication, however is not .directly with the entire space, as a vertical deflector wall 22, extends from the casing wall adjacent the flue to the air sleeve 16, and the outlet opening 21 is arranged wholly to one side of this deflector. The products of combustion are thus compelled to travel around the deflector wall to reach the flue, and thereby a more even and greater heat distribution is obtained.

The wall of the oven proper opposite the 23, extending from the plate 6 to the oven bottom 9, and spaced from the adjacent casing wall, of thestove. This wall 23 is made necessary solely through the necessity of providing for the proper escape of the gaseous fuel products without mingling with the solid fuel products. Within the oven proper, and below. the upper edges of the side walls 11 and 12, said rear wall 23 c the lower end. The lower end of the auxiliary flue extends below the upper end of the stack formed by the plate. strips 25, and an opening 27 in the rear wall of the stove casing establishes the necessary communication.

From the structure as thus far described, it will be apparent that the products of combustion from the solid fuel pass over the top of the oven proper, that is the plate 6, downwardly between the side wall of the stove casing and the partition 1, into the space between the plate 7 and the bottom 5 of the casing, on one side of the deflector wall 22, and thence to the escape flue through the opening 21. The heat from the gas or similar burner 13, however circulates through the space above the plate 7, and between it and the bottom 9 of the oven proper, thence upwardly between the plates 11 and 12 and the partitions 2 and at, downwardly within the oven to the openings 2%, and thence through the stack and auxiliary flue to the escape flue. The respective paths of circulation are clearly differentiated in the drawings, the course of the solid fuel products being marked with feather-end arrows and the course 01 the gas-heat with ball-end arrows.

It willbe further noted that the heat ra diated from the products of combustion of the solid fuel through the partition 4-. and the plate 7 will circulate in the path of circulation of the gaseous products.

The stove is designed to have the usual top 28 above the fire pot, and if preferred and as desired to have the usual gas stove top in addition. F or this purpose there is formed below the top, and beyond the oven space, a semi-casing 29, closing off a space from the interior of the stove. Burners for gas or like fuel, in any desired arrangement are positioned in this space, as will be plain from the drawings. If the gas stove top be designed, as 18 contemplated, to receive the 'usual stove plates and lids, the space in which the burners are arranged, will have communication with the auxiliary flue 26, through an opening 80.

The improved stove is complete in itself, as the various parts require no change 01 adjustment in the use of solid fuel, gaseous fuel, or both.

Having thus described the invention, what isclaimed, is

1. A combination coal and gas range, comprising a.casing, spaced partitions and upper and lower plates connecting the same to form an oven space, a fire pot arranged beyond the oven space, an escape flue communicating with the space below the lower )lflt an oven arran ed within and saaced from the walls of the oven space and open at top, an auxiliary flue in the escape flue, said auxiliary flue being in open communication with the oven from the bottom of the latter and open to the escape flue at the upper end of the auxiliary flue only.

2. A combination coal and gas range comprising a casing, a double wall oven spaced from the casing, a gas burner arranged lee-- tween the lower double walls of the oven, the interior of the oven being open to the direct heat from the gas burner, a fire pot arranged beyond the oven, a conduit closed against the oven and arranged about the same for the products of combustion of the fire pot, an escape fine in open communication with the conduit below the oven, and an escape passage open to the oven near the bottom thereof and to said escape flue at a higher point.

3. The combination coal and gas range comprising a casing, a double wall oven spaced from the casing, a gas burner arranged between the lower double walls of the oven, the interior of the oven being open to the direct heat from the gas burner, a fire pot arranged beyond the oven, a conduit closed against the oven and arranged about the same for the products of combustion of the fire pot, an escape flue in open communication with the conduit below the oven, a partition forming the rear, oven wall spaced from the rear casing wall to form an escape passage, the partition having an oven outlet opening to said passage near the lower end thereof, and the casing having an outlet opening near the upper end of said passage leading to the escape flue, and a shield extending over said last named opening located within and open to the escape flue at its upper end only.

In testimony whereof we affix our signatures.

JOHN C. VAN RIPER, JR. SIEGFRIED A. PRITSCHAU.

Copies ef this patent may be obtained forfive cents each, by addressing the Commissioner of Patents,

Washington, I). G. a 

